| laboratory | Origin: Shortened fr. Elaboratory; cf. OF. Elaboratoire, F. Laboratoire. See Elaborate, Labour] [Formerly written also elaboratory. The workroom of a chemist; also, a place devoted to experiments in any branch of natural science; as, a chemical, physical, or biological laboratory. Hence, by extension, a place where something is prepared, or some operation is performed; as, the liver is the laboratory of the bile. Source: Websters Dictionary (01 Mar 1998) |
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| laboratory animal science | The science and technology dealing with the procurement, breeding, care, health, and selection of animals used in biomedical research and testing. (12 Dec 1998) |
| laboratory chemicals | Chemicals necessary to perform experimental and/or investigative procedures and for the preparation of drugs and other chemicals. (12 Dec 1998) |
| laboratory diagnosis | A diagnosis made by a chemical, microscopic, microbiologic, immunologic, or pathologic study of secretions, discharges, blood, or tissue. (05 Mar 2000) |
| laboratory infection | Accidentally acquired infection in laboratory workers. (12 Dec 1998) |
| laboratory personnel | Those health care professionals, technicians, and assistants staffing a research or health care facility where specimens are grown, tested, or evaluated and the results of such measures are recorded. (12 Dec 1998) |
| laboratory techniques and procedures | Methods, procedures, and tests performed in the laboratory with an intended application to the diagnosis of disease or understanding of physiological functioning. The techniques include examination of microbiological, cytological, chemical, and biochemical specimens, normal and pathological. (12 Dec 1998) |
| labour | <obstetrics> The act of giving birth to a baby. There are four stages: The first stage lasts from the onset of labour until there is full dilation (10 cm.) of the cervical os (opening). The first stage of labour is also called the stage of dilatation. The second stage lasts from the full dilatation of the cervix until the baby is completely out of the birth canal and has been born. The second stage of labour is also called the stage of expulsion. The third stage lasts from birth of the foetus through expulsion or extraction of the placenta and membranes (afterbirth). The third stage of labour is also called the placental stage. The fourth stage is the hour or two after delivery when the tone of the uterus is established and the uterus contracts down again. (08 Mar 2000) |
| labour complications | <obstetrics> Medical problems associated with labour including cephalopelvic disproportion, haemorrhage, foetal distress, or other disorders. (12 Dec 1998) |
| labour onset | <obstetrics> The establishment of regular uterine contractions together with beginning dilatation of the cervix. (12 Dec 1998) |
| labour pains | <obstetrics> Rhythmical uterine contractions which under normal conditions increase in intensity, frequency, and duration, culminating in vaginal delivery of the infant. Synonym: parodynia. (05 Mar 2000) |
| labour presentation | The part of the foetal body that is in advance in the birth canal. (12 Dec 1998) |
| labour, premature | Onset of labour before term but after the foetus has become viable, usually sometime during the 29th through 38th week of gestation. (12 Dec 1998) |
| laboured respiration | <chest medicine> Difficult, usually deep, breathing in patients with cardiac or pulmonary disease or disease affecting nervous system control of ventilation. (05 Mar 2000) |
| labra | Plural of labrum. Origin: L. (05 Mar 2000) |